# Question: Independent random sampling from two normally distributed populations gives the

Independent random sampling from two normally distributed populations gives the following results:

nx = 64; x-bar = 400; σx = 20

ny = 36; y-bar = 360; σy = 25

Find a 90% confidence interval estimate of the difference between the means of the two populations.

nx = 64; x-bar = 400; σx = 20

ny = 36; y-bar = 360; σy = 25

Find a 90% confidence interval estimate of the difference between the means of the two populations.

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